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Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [sparc/] [kernel/] [ebus.c] - Blame information for rev 3

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/* $Id: ebus.c,v 1.20 2002/01/05 01:13:43 davem Exp $
 * ebus.c: PCI to EBus bridge device.
 *
 * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
 *
 * Adopted for sparc by V. Roganov and G. Raiko.
 * Fixes for different platforms by Pete Zaitcev.
 */
 
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/string.h>
 
#include <asm/system.h>
#include <asm/page.h>
#include <asm/pbm.h>
#include <asm/ebus.h>
#include <asm/io.h>
#include <asm/oplib.h>
#include <asm/prom.h>
#include <asm/bpp.h>
 
struct linux_ebus *ebus_chain = NULL;
 
/* We are together with pcic.c under CONFIG_PCI. */
extern unsigned int pcic_pin_to_irq(unsigned int, const char *name);
 
/*
 * IRQ Blacklist
 * Here we list PROMs and systems that are known to supply crap as IRQ numbers.
 */
struct ebus_device_irq {
        char *name;
        unsigned int pin;
};
 
struct ebus_system_entry {
        char *esname;
        struct ebus_device_irq *ipt;
};
 
static struct ebus_device_irq je1_1[] = {
        { "8042",                3 },
        { "SUNW,CS4231",         0 },
        { "parallel",            0 },
        { "se",                  2 },
        { NULL, 0 }
};
 
/*
 * Gleb's JE1 supplied reasonable pin numbers, but mine did not (OBP 2.32).
 * Blacklist the sucker... Note that Gleb's system will work.
 */
static struct ebus_system_entry ebus_blacklist[] = {
        { "SUNW,JavaEngine1", je1_1 },
        { NULL, NULL }
};
 
static struct ebus_device_irq *ebus_blackp = NULL;
 
/*
 */
static inline unsigned long ebus_alloc(size_t size)
{
        return (unsigned long)kmalloc(size, GFP_ATOMIC);
}
 
/*
 */
int __init ebus_blacklist_irq(const char *name)
{
        struct ebus_device_irq *dp;
 
        if ((dp = ebus_blackp) != NULL) {
                for (; dp->name != NULL; dp++) {
                        if (strcmp(name, dp->name) == 0) {
                                return pcic_pin_to_irq(dp->pin, name);
                        }
                }
        }
        return 0;
}
 
void __init fill_ebus_child(struct device_node *dp,
                            struct linux_ebus_child *dev)
{
        const int *regs;
        const int *irqs;
        int i, len;
 
        dev->prom_node = dp;
        regs = of_get_property(dp, "reg", &len);
        if (!regs)
                len = 0;
        dev->num_addrs = len / sizeof(regs[0]);
 
        for (i = 0; i < dev->num_addrs; i++) {
                if (regs[i] >= dev->parent->num_addrs) {
                        prom_printf("UGH: property for %s was %d, need < %d\n",
                                    dev->prom_node->name, len,
                                    dev->parent->num_addrs);
                        panic(__FUNCTION__);
                }
 
                /* XXX resource */
                dev->resource[i].start =
                        dev->parent->resource[regs[i]].start;
        }
 
        for (i = 0; i < PROMINTR_MAX; i++)
                dev->irqs[i] = PCI_IRQ_NONE;
 
        if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
                dev->num_irqs = 1;
        } else {
                irqs = of_get_property(dp, "interrupts", &len);
                if (!irqs) {
                        dev->num_irqs = 0;
                        dev->irqs[0] = 0;
                        if (dev->parent->num_irqs != 0) {
                                dev->num_irqs = 1;
                                dev->irqs[0] = dev->parent->irqs[0];
                        }
                } else {
                        dev->num_irqs = len / sizeof(irqs[0]);
                        if (irqs[0] == 0 || irqs[0] >= 8) {
                                /*
                                 * XXX Zero is a valid pin number...
                                 * This works as long as Ebus is not wired
                                 * to INTA#.
                                 */
                                printk("EBUS: %s got bad irq %d from PROM\n",
                                       dev->prom_node->name, irqs[0]);
                                dev->num_irqs = 0;
                                dev->irqs[0] = 0;
                        } else {
                                dev->irqs[0] =
                                        pcic_pin_to_irq(irqs[0],
                                                        dev->prom_node->name);
                        }
                }
        }
}
 
void __init fill_ebus_device(struct device_node *dp, struct linux_ebus_device *dev)
{
        const struct linux_prom_registers *regs;
        struct linux_ebus_child *child;
        struct dev_archdata *sd;
        const int *irqs;
        int i, n, len;
        unsigned long baseaddr;
 
        dev->prom_node = dp;
 
        regs = of_get_property(dp, "reg", &len);
        if (!regs)
                len = 0;
        if (len % sizeof(struct linux_prom_registers)) {
                prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",
                            dev->prom_node->name, len,
                            (int)sizeof(struct linux_prom_registers));
                panic(__FUNCTION__);
        }
        dev->num_addrs = len / sizeof(struct linux_prom_registers);
 
        for (i = 0; i < dev->num_addrs; i++) {
                /*
                 * XXX Collect JE-1 PROM
                 *
                 * Example - JS-E with 3.11:
                 *  /ebus
                 *      regs
                 *        0x00000000, 0x0, 0x00000000, 0x0, 0x00000000,
                 *        0x82000010, 0x0, 0xf0000000, 0x0, 0x01000000,
                 *        0x82000014, 0x0, 0x38800000, 0x0, 0x00800000,
                 *      ranges
                 *        0x00, 0x00000000, 0x02000010, 0x0, 0x0, 0x01000000,
                 *        0x01, 0x01000000, 0x02000014, 0x0, 0x0, 0x00800000,
                 *  /ebus/8042
                 *      regs
                 *        0x00000001, 0x00300060, 0x00000008,
                 *        0x00000001, 0x00300060, 0x00000008,
                 */
                n = regs[i].which_io;
                if (n >= 4) {
                        /* XXX This is copied from old JE-1 by Gleb. */
                        n = (regs[i].which_io - 0x10) >> 2;
                } else {
                        ;
                }
 
/*
 * XXX Now as we have regions, why don't we make an on-demand allocation...
 */
                dev->resource[i].start = 0;
                if ((baseaddr = dev->bus->self->resource[n].start +
                    regs[i].phys_addr) != 0) {
                        /* dev->resource[i].name = dev->prom_name; */
                        if ((baseaddr = (unsigned long) ioremap(baseaddr,
                            regs[i].reg_size)) == 0) {
                                panic("ebus: unable to remap dev %s",
                                      dev->prom_node->name);
                        }
                }
                dev->resource[i].start = baseaddr;      /* XXX Unaligned */
        }
 
        for (i = 0; i < PROMINTR_MAX; i++)
                dev->irqs[i] = PCI_IRQ_NONE;
 
        if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
                dev->num_irqs = 1;
        } else {
                irqs = of_get_property(dp, "interrupts", &len);
                if (!irqs) {
                        dev->num_irqs = 0;
                        if ((dev->irqs[0] = dev->bus->self->irq) != 0) {
                                dev->num_irqs = 1;
/* P3 */ /* printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
                        }
                } else {
                        dev->num_irqs = 1;  /* dev->num_irqs = len / sizeof(irqs[0]); */
                        if (irqs[0] == 0 || irqs[0] >= 8) {
                                /* See above for the parent. XXX */
                                printk("EBUS: %s got bad irq %d from PROM\n",
                                       dev->prom_node->name, irqs[0]);
                                dev->num_irqs = 0;
                                dev->irqs[0] = 0;
                        } else {
                                dev->irqs[0] =
                                        pcic_pin_to_irq(irqs[0],
                                                        dev->prom_node->name);
                        }
                }
        }
 
        sd = &dev->ofdev.dev.archdata;
        sd->prom_node = dp;
        sd->op = &dev->ofdev;
        sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;
 
        dev->ofdev.node = dp;
        dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
        dev->ofdev.dev.bus = &ebus_bus_type;
        sprintf(dev->ofdev.dev.bus_id, "ebus[%08x]", dp->node);
 
        /* Register with core */
        if (of_device_register(&dev->ofdev) != 0)
                printk(KERN_DEBUG "ebus: device registration error for %s!\n",
                       dp->path_component_name);
 
        if ((dp = dp->child) != NULL) {
                dev->children = (struct linux_ebus_child *)
                        ebus_alloc(sizeof(struct linux_ebus_child));
 
                child = dev->children;
                child->next = NULL;
                child->parent = dev;
                child->bus = dev->bus;
                fill_ebus_child(dp, child);
 
                while ((dp = dp->sibling) != NULL) {
                        child->next = (struct linux_ebus_child *)
                                ebus_alloc(sizeof(struct linux_ebus_child));
 
                        child = child->next;
                        child->next = NULL;
                        child->parent = dev;
                        child->bus = dev->bus;
                        fill_ebus_child(dp, child);
                }
        }
}
 
void __init ebus_init(void)
{
        const struct linux_prom_pci_registers *regs;
        struct linux_pbm_info *pbm;
        struct linux_ebus_device *dev;
        struct linux_ebus *ebus;
        struct ebus_system_entry *sp;
        struct pci_dev *pdev;
        struct pcidev_cookie *cookie;
        struct device_node *dp;
        struct resource *p;
        unsigned short pci_command;
        int len, reg, nreg;
        int num_ebus = 0;
 
        dp = of_find_node_by_path("/");
        for (sp = ebus_blacklist; sp->esname != NULL; sp++) {
                if (strcmp(dp->name, sp->esname) == 0) {
                        ebus_blackp = sp->ipt;
                        break;
                }
        }
 
        pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);
        if (!pdev)
                return;
 
        cookie = pdev->sysdata;
        dp = cookie->prom_node;
 
        ebus_chain = ebus = (struct linux_ebus *)
                        ebus_alloc(sizeof(struct linux_ebus));
        ebus->next = NULL;
 
        while (dp) {
                struct device_node *nd;
 
                ebus->prom_node = dp;
                ebus->self = pdev;
                ebus->parent = pbm = cookie->pbm;
 
                /* Enable BUS Master. */
                pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
                pci_command |= PCI_COMMAND_MASTER;
                pci_write_config_word(pdev, PCI_COMMAND, pci_command);
 
                regs = of_get_property(dp, "reg", &len);
                if (!regs) {
                        prom_printf("%s: can't find reg property\n",
                                    __FUNCTION__);
                        prom_halt();
                }
                nreg = len / sizeof(struct linux_prom_pci_registers);
 
                p = &ebus->self->resource[0];
                for (reg = 0; reg < nreg; reg++) {
                        if (!(regs[reg].which_io & 0x03000000))
                                continue;
 
                        (p++)->start = regs[reg].phys_lo;
                }
 
                ebus->ofdev.node = dp;
                ebus->ofdev.dev.parent = &pdev->dev;
                ebus->ofdev.dev.bus = &ebus_bus_type;
                sprintf(ebus->ofdev.dev.bus_id, "ebus%d", num_ebus);
 
                /* Register with core */
                if (of_device_register(&ebus->ofdev) != 0)
                        printk(KERN_DEBUG "ebus: device registration error for %s!\n",
                               dp->path_component_name);
 
 
                nd = dp->child;
                if (!nd)
                        goto next_ebus;
 
                ebus->devices = (struct linux_ebus_device *)
                                ebus_alloc(sizeof(struct linux_ebus_device));
 
                dev = ebus->devices;
                dev->next = NULL;
                dev->children = NULL;
                dev->bus = ebus;
                fill_ebus_device(nd, dev);
 
                while ((nd = nd->sibling) != NULL) {
                        dev->next = (struct linux_ebus_device *)
                                ebus_alloc(sizeof(struct linux_ebus_device));
 
                        dev = dev->next;
                        dev->next = NULL;
                        dev->children = NULL;
                        dev->bus = ebus;
                        fill_ebus_device(nd, dev);
                }
 
        next_ebus:
                pdev = pci_get_device(PCI_VENDOR_ID_SUN,
                                       PCI_DEVICE_ID_SUN_EBUS, pdev);
                if (!pdev)
                        break;
 
                cookie = pdev->sysdata;
                dp = cookie->prom_node;
 
                ebus->next = (struct linux_ebus *)
                        ebus_alloc(sizeof(struct linux_ebus));
                ebus = ebus->next;
                ebus->next = NULL;
                ++num_ebus;
        }
        if (pdev)
                pci_dev_put(pdev);
}

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Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [sparc/] [kernel/] [ebus.c] - Blame information for rev 3

Line No.	Rev	Author	Line
1	3	xianfeng	`/* $Id: ebus.c,v 1.20 2002/01/05 01:13:43 davem Exp $`
2			`* ebus.c: PCI to EBus bridge device.`
3			`*`
4			`* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)`
5			`*`
6			`* Adopted for sparc by V. Roganov and G. Raiko.`
7			`* Fixes for different platforms by Pete Zaitcev.`
8			`*/`
9
10			`#include <linux/kernel.h>`
11			`#include <linux/types.h>`
12			`#include <linux/init.h>`
13			`#include <linux/slab.h>`
14			`#include <linux/string.h>`
15
16			`#include <asm/system.h>`
17			`#include <asm/page.h>`
18			`#include <asm/pbm.h>`
19			`#include <asm/ebus.h>`
20			`#include <asm/io.h>`
21			`#include <asm/oplib.h>`
22			`#include <asm/prom.h>`
23			`#include <asm/bpp.h>`
24
25			`struct linux_ebus *ebus_chain = NULL;`
26
27			`/* We are together with pcic.c under CONFIG_PCI. */`
28			`extern unsigned int pcic_pin_to_irq(unsigned int, const char *name);`
29
30			`/*`
31			`* IRQ Blacklist`
32			`* Here we list PROMs and systems that are known to supply crap as IRQ numbers.`
33			`*/`
34			`struct ebus_device_irq {`
35			`char *name;`
36			`unsigned int pin;`
37			`};`
38
39			`struct ebus_system_entry {`
40			`char *esname;`
41			`struct ebus_device_irq *ipt;`
42			`};`
43
44			`static struct ebus_device_irq je1_1[] = {`
45			`{ "8042", 3 },`
46			`{ "SUNW,CS4231", 0 },`
47			`{ "parallel", 0 },`
48			`{ "se", 2 },`
49			`{ NULL, 0 }`
50			`};`
51
52			`/*`
53			`* Gleb's JE1 supplied reasonable pin numbers, but mine did not (OBP 2.32).`
54			`* Blacklist the sucker... Note that Gleb's system will work.`
55			`*/`
56			`static struct ebus_system_entry ebus_blacklist[] = {`
57			`{ "SUNW,JavaEngine1", je1_1 },`
58			`{ NULL, NULL }`
59			`};`
60
61			`static struct ebus_device_irq *ebus_blackp = NULL;`
62
63			`/*`
64			`*/`
65			`static inline unsigned long ebus_alloc(size_t size)`
66			`{`
67			`return (unsigned long)kmalloc(size, GFP_ATOMIC);`
68			`}`
69
70			`/*`
71			`*/`
72			`int __init ebus_blacklist_irq(const char *name)`
73			`{`
74			`struct ebus_device_irq *dp;`
75
76			`if ((dp = ebus_blackp) != NULL) {`
77			`for (; dp->name != NULL; dp++) {`
78			`if (strcmp(name, dp->name) == 0) {`
79			`return pcic_pin_to_irq(dp->pin, name);`
80			`}`
81			`}`
82			`}`
83			`return 0;`
84			`}`
85
86			`void __init fill_ebus_child(struct device_node *dp,`
87			`struct linux_ebus_child *dev)`
88			`{`
89			`const int *regs;`
90			`const int *irqs;`
91			`int i, len;`
92
93			`dev->prom_node = dp;`
94			`regs = of_get_property(dp, "reg", &len);`
95			`if (!regs)`
96			`len = 0;`
97			`dev->num_addrs = len / sizeof(regs[0]);`
98
99			`for (i = 0; i < dev->num_addrs; i++) {`
100			`if (regs[i] >= dev->parent->num_addrs) {`
101			`prom_printf("UGH: property for %s was %d, need < %d\n",`
102			`dev->prom_node->name, len,`
103			`dev->parent->num_addrs);`
104			`panic(__FUNCTION__);`
105			`}`
106
107			`/* XXX resource */`
108			`dev->resource[i].start =`
109			`dev->parent->resource[regs[i]].start;`
110			`}`
111
112			`for (i = 0; i < PROMINTR_MAX; i++)`
113			`dev->irqs[i] = PCI_IRQ_NONE;`
114
115			`if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {`
116			`dev->num_irqs = 1;`
117			`} else {`
118			`irqs = of_get_property(dp, "interrupts", &len);`
119			`if (!irqs) {`
120			`dev->num_irqs = 0;`
121			`dev->irqs[0] = 0;`
122			`if (dev->parent->num_irqs != 0) {`
123			`dev->num_irqs = 1;`
124			`dev->irqs[0] = dev->parent->irqs[0];`
125			`}`
126			`} else {`
127			`dev->num_irqs = len / sizeof(irqs[0]);`
128			`if (irqs[0] == 0 \|\| irqs[0] >= 8) {`
129			`/*`
130			`* XXX Zero is a valid pin number...`
131			`* This works as long as Ebus is not wired`
132			`* to INTA#.`
133			`*/`
134			`printk("EBUS: %s got bad irq %d from PROM\n",`
135			`dev->prom_node->name, irqs[0]);`
136			`dev->num_irqs = 0;`
137			`dev->irqs[0] = 0;`
138			`} else {`
139			`dev->irqs[0] =`
140			`pcic_pin_to_irq(irqs[0],`
141			`dev->prom_node->name);`
142			`}`
143			`}`
144			`}`
145			`}`
146
147			`void __init fill_ebus_device(struct device_node dp, struct linux_ebus_device dev)`
148			`{`
149			`const struct linux_prom_registers *regs;`
150			`struct linux_ebus_child *child;`
151			`struct dev_archdata *sd;`
152			`const int *irqs;`
153			`int i, n, len;`
154			`unsigned long baseaddr;`
155
156			`dev->prom_node = dp;`
157
158			`regs = of_get_property(dp, "reg", &len);`
159			`if (!regs)`
160			`len = 0;`
161			`if (len % sizeof(struct linux_prom_registers)) {`
162			`prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",`
163			`dev->prom_node->name, len,`
164			`(int)sizeof(struct linux_prom_registers));`
165			`panic(__FUNCTION__);`
166			`}`
167			`dev->num_addrs = len / sizeof(struct linux_prom_registers);`
168
169			`for (i = 0; i < dev->num_addrs; i++) {`
170			`/*`
171			`* XXX Collect JE-1 PROM`
172			`*`
173			`* Example - JS-E with 3.11:`
174			`* /ebus`
175			`* regs`
176			`* 0x00000000, 0x0, 0x00000000, 0x0, 0x00000000,`
177			`* 0x82000010, 0x0, 0xf0000000, 0x0, 0x01000000,`
178			`* 0x82000014, 0x0, 0x38800000, 0x0, 0x00800000,`
179			`* ranges`
180			`* 0x00, 0x00000000, 0x02000010, 0x0, 0x0, 0x01000000,`
181			`* 0x01, 0x01000000, 0x02000014, 0x0, 0x0, 0x00800000,`
182			`* /ebus/8042`
183			`* regs`
184			`* 0x00000001, 0x00300060, 0x00000008,`
185			`* 0x00000001, 0x00300060, 0x00000008,`
186			`*/`
187			`n = regs[i].which_io;`
188			`if (n >= 4) {`
189			`/* XXX This is copied from old JE-1 by Gleb. */`
190			`n = (regs[i].which_io - 0x10) >> 2;`
191			`} else {`
192			`;`
193			`}`
194
195			`/*`
196			`* XXX Now as we have regions, why don't we make an on-demand allocation...`
197			`*/`
198			`dev->resource[i].start = 0;`
199			`if ((baseaddr = dev->bus->self->resource[n].start +`
200			`regs[i].phys_addr) != 0) {`
201			`/* dev->resource[i].name = dev->prom_name; */`
202			`if ((baseaddr = (unsigned long) ioremap(baseaddr,`
203			`regs[i].reg_size)) == 0) {`
204			`panic("ebus: unable to remap dev %s",`
205			`dev->prom_node->name);`
206			`}`
207			`}`
208			`dev->resource[i].start = baseaddr; /* XXX Unaligned */`
209			`}`
210
211			`for (i = 0; i < PROMINTR_MAX; i++)`
212			`dev->irqs[i] = PCI_IRQ_NONE;`
213
214			`if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {`
215			`dev->num_irqs = 1;`
216			`} else {`
217			`irqs = of_get_property(dp, "interrupts", &len);`
218			`if (!irqs) {`
219			`dev->num_irqs = 0;`
220			`if ((dev->irqs[0] = dev->bus->self->irq) != 0) {`
221			`dev->num_irqs = 1;`
222			`/* P3 / / printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */`
223			`}`
224			`} else {`
225			`dev->num_irqs = 1; /* dev->num_irqs = len / sizeof(irqs[0]); */`
226			`if (irqs[0] == 0 \|\| irqs[0] >= 8) {`
227			`/* See above for the parent. XXX */`
228			`printk("EBUS: %s got bad irq %d from PROM\n",`
229			`dev->prom_node->name, irqs[0]);`
230			`dev->num_irqs = 0;`
231			`dev->irqs[0] = 0;`
232			`} else {`
233			`dev->irqs[0] =`
234			`pcic_pin_to_irq(irqs[0],`
235			`dev->prom_node->name);`
236			`}`
237			`}`
238			`}`
239
240			`sd = &dev->ofdev.dev.archdata;`
241			`sd->prom_node = dp;`
242			`sd->op = &dev->ofdev;`
243			`sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;`
244
245			`dev->ofdev.node = dp;`
246			`dev->ofdev.dev.parent = &dev->bus->ofdev.dev;`
247			`dev->ofdev.dev.bus = &ebus_bus_type;`
248			`sprintf(dev->ofdev.dev.bus_id, "ebus[%08x]", dp->node);`
249
250			`/* Register with core */`
251			`if (of_device_register(&dev->ofdev) != 0)`
252			`printk(KERN_DEBUG "ebus: device registration error for %s!\n",`
253			`dp->path_component_name);`
254
255			`if ((dp = dp->child) != NULL) {`
256			`dev->children = (struct linux_ebus_child *)`
257			`ebus_alloc(sizeof(struct linux_ebus_child));`
258
259			`child = dev->children;`
260			`child->next = NULL;`
261			`child->parent = dev;`
262			`child->bus = dev->bus;`
263			`fill_ebus_child(dp, child);`
264
265			`while ((dp = dp->sibling) != NULL) {`
266			`child->next = (struct linux_ebus_child *)`
267			`ebus_alloc(sizeof(struct linux_ebus_child));`
268
269			`child = child->next;`
270			`child->next = NULL;`
271			`child->parent = dev;`
272			`child->bus = dev->bus;`
273			`fill_ebus_child(dp, child);`
274			`}`
275			`}`
276			`}`
277
278			`void __init ebus_init(void)`
279			`{`
280			`const struct linux_prom_pci_registers *regs;`
281			`struct linux_pbm_info *pbm;`
282			`struct linux_ebus_device *dev;`
283			`struct linux_ebus *ebus;`
284			`struct ebus_system_entry *sp;`
285			`struct pci_dev *pdev;`
286			`struct pcidev_cookie *cookie;`
287			`struct device_node *dp;`
288			`struct resource *p;`
289			`unsigned short pci_command;`
290			`int len, reg, nreg;`
291			`int num_ebus = 0;`
292
293			`dp = of_find_node_by_path("/");`
294			`for (sp = ebus_blacklist; sp->esname != NULL; sp++) {`
295			`if (strcmp(dp->name, sp->esname) == 0) {`
296			`ebus_blackp = sp->ipt;`
297			`break;`
298			`}`
299			`}`
300
301			`pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);`
302			`if (!pdev)`
303			`return;`
304
305			`cookie = pdev->sysdata;`
306			`dp = cookie->prom_node;`
307
308			`ebus_chain = ebus = (struct linux_ebus *)`
309			`ebus_alloc(sizeof(struct linux_ebus));`
310			`ebus->next = NULL;`
311
312			`while (dp) {`
313			`struct device_node *nd;`
314
315			`ebus->prom_node = dp;`
316			`ebus->self = pdev;`
317			`ebus->parent = pbm = cookie->pbm;`
318
319			`/* Enable BUS Master. */`
320			`pci_read_config_word(pdev, PCI_COMMAND, &pci_command);`
321			`pci_command \|= PCI_COMMAND_MASTER;`
322			`pci_write_config_word(pdev, PCI_COMMAND, pci_command);`
323
324			`regs = of_get_property(dp, "reg", &len);`
325			`if (!regs) {`
326			`prom_printf("%s: can't find reg property\n",`
327			`__FUNCTION__);`
328			`prom_halt();`
329			`}`
330			`nreg = len / sizeof(struct linux_prom_pci_registers);`
331
332			`p = &ebus->self->resource[0];`
333			`for (reg = 0; reg < nreg; reg++) {`
334			`if (!(regs[reg].which_io & 0x03000000))`
335			`continue;`
336
337			`(p++)->start = regs[reg].phys_lo;`
338			`}`
339
340			`ebus->ofdev.node = dp;`
341			`ebus->ofdev.dev.parent = &pdev->dev;`
342			`ebus->ofdev.dev.bus = &ebus_bus_type;`
343			`sprintf(ebus->ofdev.dev.bus_id, "ebus%d", num_ebus);`
344
345			`/* Register with core */`
346			`if (of_device_register(&ebus->ofdev) != 0)`
347			`printk(KERN_DEBUG "ebus: device registration error for %s!\n",`
348			`dp->path_component_name);`
349
350
351			`nd = dp->child;`
352			`if (!nd)`
353			`goto next_ebus;`
354
355			`ebus->devices = (struct linux_ebus_device *)`
356			`ebus_alloc(sizeof(struct linux_ebus_device));`
357
358			`dev = ebus->devices;`
359			`dev->next = NULL;`
360			`dev->children = NULL;`
361			`dev->bus = ebus;`
362			`fill_ebus_device(nd, dev);`
363
364			`while ((nd = nd->sibling) != NULL) {`
365			`dev->next = (struct linux_ebus_device *)`
366			`ebus_alloc(sizeof(struct linux_ebus_device));`
367
368			`dev = dev->next;`
369			`dev->next = NULL;`
370			`dev->children = NULL;`
371			`dev->bus = ebus;`
372			`fill_ebus_device(nd, dev);`
373			`}`
374
375			`next_ebus:`
376			`pdev = pci_get_device(PCI_VENDOR_ID_SUN,`
377			`PCI_DEVICE_ID_SUN_EBUS, pdev);`
378			`if (!pdev)`
379			`break;`
380
381			`cookie = pdev->sysdata;`
382			`dp = cookie->prom_node;`
383
384			`ebus->next = (struct linux_ebus *)`
385			`ebus_alloc(sizeof(struct linux_ebus));`
386			`ebus = ebus->next;`
387			`ebus->next = NULL;`
388			`++num_ebus;`
389			`}`
390			`if (pdev)`
391			`pci_dev_put(pdev);`
392			`}`